Answer:
The subheading is found below the heading, at the beginning of the page.
Explanation:
The prefix "sub" means inferiority and refers to something that is below an element that is related. In this way, a subheading is related to the heading, although it is inferior in its placement and value, for this reason, it must accompany the heading, but be positioned below.
Thus, on a text page, at the beginning of the page, we can see the heading being accompanied by the subheading, which is placed in an inferior position, below the heading.